Stave-dressing machine



(No Model.) 2 sheets-sheet 1.

J. FRITZ.

STAVE DRESSING MACHINE.

No. 309,341. Pentaed Dec. 16, 1884.

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(No Model.)

G. J. .'PRITZ. STAVB DRESSING MACHINE."

Patented Deo. 16

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finire @rares Farsi-tir GEORGE J. FRITZ, F ST. il() UlS, MISSOU ll.

LZJIFIS'ATIN forming part of Letters Patent No. 309,3i-l, dated December 3.6, 1884:.

Application tiled July 1T, 1834. (No model.)

To LM whom, t may concern:

Be it known that I, Geenen J. Fnrrz, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful linprovenient in Stavellressing Machines, of which the following is a full, clear, and exact description, reference being had to the aecoinpanying drawings, forming part of this speciiication, and in whichM Figure l is a side elevation. Fig. 21s atop view. Fig. 3 is a section taken on line 3 3, Fig. 2, not showing the supporti ng-legs ofthe machine. Fig. 4L is a siinilar view taken on line 4 4, Fig. 2. Fig. 5 is an enlarged elevation of the delivery-rolls. Fig. (S is a section taken on line 6 6, Fig. 8. Fig. 7 is an enlarged top view ofthe feed'rolls, cutters, and delivery-rolls, showing also one side of the frame of the machine; and Fig. S is a section taken on lineS 8, Fig. 7.

'My invention relates to a machine for concaving and couvexing staves; and it consistsin features of novelty hereinafter fully described, and pointed out in the claim.

Referring to the drawings, A is the fraaie ofthe machine, having supporting-legs A6.

B represents the main drivingshaft of the niaehine, supported in journal-boxes l', secured to the franie A. lt has a tight and loose pulley, B2 B, to receive the niain driving-belt. lt also has a large pulley, C, connected by incans of a belt with pulleys D ll on the eutter-shafts D H', the beltpassing, as shown in Fig. lby dotted lines, from the top of the pulley C over the upper pulley, D, thence under saine and over the lower pulley, H, and thence back and under the pulley (l. The shafts l) H are journalcd in boxes D2 lil, secured to the frame A, and on thein at one side of the inachine are cutter-heads D lil, provided with knives or cutters DL H l, the Lipper cutter-head, D, forming the inner or concave surface of the stave as the blank passes through, the knives having round cutting-edges, and the lower head, H, forming the outer or convex surface of the stave, the knives having hollow er concave cutting-edges. The blanks are fed to the cutters through feed-rollers N Nr on shafts N', the shaft of the upper roller being 5o journaled in boxes N2, fitting in slots A' ofthe franie A and held down by springs N3, so that this upper roller will be allowed to rise slightly to adinit staves of different thicknesses, and yet be held down tight uponA stavcs of all thicknesses. This upper roller is luted or serrated longitudinally, so as to take hold of and feed the blank through, and it is keyed to its shaft, as shown in Fig. 8. lts shaft is driven to feed the blank by a cog-wheel, 0, thereon, meshing into a similar wheel, O', on a shaft, 02, provided with a pulley, O3, connected by means of a belt with a pulley, 0*, on `the niain driving-shaft B.

F l?X represent deliveryrollers on shafts l", the shaft ofthe upper roller beingjonrnaled in movable boxes F2, held down by springs F, as and for the saine purpose as in the case of the upper fe d-roller. The tension of these springs N and F inay be regulated by setscrews EL i, passing through the top plate of the frame, as shown in Fig. 8. The upper delivery-roller is serrated and is keyed to its shaft, being turned by a cog-whec1, P, meshing into the wheel O'. (See Figs. 2 and 3.) The upper delivery-roller has a convex and the lower one a concave surface, as shown in Fi 5, and the feed-rollers are similarly shaped.

ln line with the upper part of the lower cutter and the lower feed and delivery rollers is a narrow table or strip, T, secured to the fraine of the machine, and upon which the blank is held as it passes through by aroller, U, on a shaft, U', journaled in a befr, U2, fitting in an opening, A, of one side ofthe fraine A, as shown in Figs. G and 8, and held down by an elastic cushion, U, and set-screw U". Just over the lower cutter is another roller,V, siniilar to that, U, having shalt V', box V2, cushion V", and set-screw V, the box fitting in an opening, A3, of the frame A. These rollers act to hold the stave in position, and they preferably have convex surfaces, as shown in Figs. 6 and 7. The stave is delivered beneath a roller, XV, on a shaft, YV', securcd'by a bracket, VIZ, and bolts W to the frame of the machine, (see Fig. 8, the bolts passing through adjusted to suit stavesof different thicknesses. This roller tends to hold the stave down to a position in line with the feed and delivery rollers and cutters.

The two parts of the fraine A are secured together by the rods A". (See Fi fr. 2.)

I clailn as in'y inventionM rfi a slot in the bracket, so that the roller can be H, lower feedlroller, NX, lower delivery-roller, PX, narrow table T, between the lower feedroller and the lower cutter-head, spring-rollers A machine for dressing;` stoves which eon- I sists ofa frame, A, in two parts secured together by tie-rods A4, main shaft journciled on one end of the frame, large pulley C and small U and V, to hold down the staves on each side pulley O", mounted on the main shaft, upper ofthe upperCutter-heud, and depressing-roller cutter-shaft, H, carrying Gutter-head D,pul W, to prevent the upward movement of the ley D, pinion O', and large pulley O3, feed- Steves, as set forth. roller shaft N', Carrying iluted roller N, and 1 r oog-wheel O, delivery-rollershzift P, carrying I GEORGE J' FINTA' uted roller l?, and cog-wheel P5, the oogwheels meshing with the pinion, lower cutter- Shzift, D', Carrying Cutter-head H3 and pulley In presence of GEO. H. KNIGHT, SAML. KNIGHT. 

